Koshi Weather in September
Koshi in September
The short of it: Koshi in September averages a high of 25 °C (77 °F) and a low of 18 °C (64 °F), with 191 mm (7.5 in) of rain and about 12 h 22 min of daylight. Rated 3 of 5 for a visit; the best months are June and May. Source: TerraClimate climate normals, 1991–2020.
Average high 25° · low 18° · rain 191 mm · daylight 12 h 22 min
✦✦✦ Fair for a visit · best months: June & May
Thirty years of records give Koshi an average September high of 25°, a low of 18° and some 191 mm of rain. The year turns hard here: highs drop 5° from August to about 25°, with nights near 18°. Wet spells are common — about 191 mm, the 3rd wettest month.
The sun is up for about 12 h 22 min in mid-September, 72 minutes less than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates September 3 of 5 for a visit; the finest months here are June and May.
Against its neighbours, Koshi runs cooler than most and drier than most in September. Asahi, 5 km to the NNW, sees much the same highs.
September in Koshi, by the numbers
- Warmth rank
- 3rd warmest of 12
- Rain rank
- 3rd wettest of 12
- Versus August
- 5° colder, 68 mm more rain
- Versus October
- 6° warmer
- Day–night spread
- 8°
- Snow season
- Dec–Feb
- Daylight, mid-month
- 12 h 22 min
- Average wind
- 12 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| AsahiToyama | 5 km NNW | 26° | 18° | 193 mm |
| NyūzenToyama | 7 km WNW | 26° | 18° | 194 mm |
| Kurobe-shiToyama | 11 km W | 26° | 18° | 197 mm |
| UozuToyama | 19 km SW | 26° | 18° | 199 mm |
| NamerikawaToyama | 25 km SW | 26° | 18° | 201 mm |
| ItoigawaNiigata | 29 km ENE | 26° | 18° | 187 mm |
| KamiichiToyama | 29 km SW | 27° | 18° | 200 mm |
| HakubaNagano | 35 km SE | 23° | 15° | 156 mm |